Re: Functions which are mode dependent

[Stefan Monnier via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

> (defun expr-elisp ()
>   (setq imenu-generic-expression
>     `( ("defun" ,(concat "^\\s-*"
>                    "(\\(defun\\|define-minor-mode\\)\\s-+"
>                    "\\(\\(\\sw\\|\\s_\\)+\\)") 2) )) )
>
>
> (defun expr-selector ()
>   (cond
>     ((eq major-mode 'emacs-lisp-mode)  (expr-elisp))
>     (t  (expr-generic)) ))
>
> I have put the code above in a minor mode. 
>
> ;;;###autoload
> (define-minor-mode tema-minor-mode
>   (if tema-minor-mode
>         (expr-selector)
>       (message "Tema Deactivated")))

This `message` is a lie because you do not re-set
`imenu-generic-expression` to its original value.


        Stefan